Devitrification in SiO2-B2O3-Al2O3-La2O3-TiO2 Glass during the Infiltration of Ceramic Composite

Afonso Chimanski; Amanda Martins Jordão; Paulo Francisco Cesar; Humberto Naoyuki Yoshimura

doi:10.4028/www.scientific.net/MSF.881.77

Paper Titles

Porous Ceramics Obtained by Slip/Starch Casting Consolidation Method (SSCC)
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Organic Additives Used as Binders and Pore-Forming Elements of TIO₂ Ceramics
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Obtaining and Characterization of Porous Bodies Obtained by Gelatinization
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Processing of Aqueous Tape Casting of Glass-Ceramic in the SiO₂-Al₂O₃-MgO-Li₂O System with ZrO₂and B₂O₃ Addition
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Devitrification in SiO₂-B₂O₃-Al₂O₃-La₂O₃-TiO₂ Glass during the Infiltration of Ceramic Composite
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Crystallization Kinetics of β-Spodumene/Cordierite-Based Glass-Ceramics
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Development of α-Al₂O₃ Ceramics for Bottom of Sintering Impeller Furnace
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Effect of TiB₂ on Pressureless Sintering and Hot Pressing of ZrB₂
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Thermal Shock Resistance of Liquid Phase Sintered SiC
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HomeMaterials Science ForumMaterials Science Forum Vol. 881Devitrification in SiO2-B2O3-Al2O3-La2O3-TiO2...

Devitrification in SiO₂-B₂O₃-Al₂O₃-La₂O₃-TiO₂ Glass during the Infiltration of Ceramic Composite

Abstract:

Dental prostheses made of ceramic composites infiltrated with glasses have been used due to their biocompatibility and possibility to mimic the natural teeth. In this study, the devitrification behavior of 20SiO₂-25B₂O₃-25Al₂O₃-15La₂O₃-15TiO₂ glass during the infiltration process in a porous alumina preform was investigated. Glass frits were prepared by melting the raw materials at 1500 °C for 60 min. The glass was infiltrated into the alumina preform at 1,150 or 1,200 °C for 60 min. The specimens were characterized by X-ray diffraction analysis and scanning electron microscopy. After the infiltration, it was possible to note that the devitrification process occurred in the remaining glass (excess glass that did not infiltrate in the preform), forming mostly aluminum borate and mullite crystalline phases. However, within the infiltrated composite no devitrification was noticed in the infiltrated glass. Possible explanations for this behavior are discussed.

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Periodical:

Materials Science Forum (Volume 881)

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77-82

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.881.77

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Online since:

November 2016

Authors:

Afonso Chimanski*, Amanda Martins Jordão, Paulo Francisco Cesar, Humberto Naoyuki Yoshimura

Keywords:

Composite, Dental Ceramic, Devitrification, Glass, Infiltration

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